1.14.13.218	native and seleno-L-methionine-labelled enzyme, hanging drop vapor diffusion method, using 0.7-1.0 M lithium sulfate, 0.1 M sodium citrate pH 5.0–5.5, 0.5 M ammonium sulfate or 14-17% (w/v) PEG 10 000, 0.1 M ammonium acetate, 0.1 M Bis-Tris pH 5.5 and 23-26% (w/v) PEG 3350, 0.1 M Bis-Tris pH 5.8-6.0, 0.2 M ammonium sulfate